On-Vehicle Inspection

ON-VEHICLE INSPECTION




1. INSPECT THROTTLE BODY
Check that the throttle linkage moves smoothly.

2. INSPECT THROTTLE POSITION SENSOR




a. Apply vacuum to the throttle opener.
b. Disconnect the sensor connector.







c. Using an ohmmeter, measure the resistance between each terminal.
d. Reconnect the sensor connector.

3. M/T: INSPECT DASHPOT (DP)




a. Allow the engine to warm up to normal operating temperature.

b. Check the idle speed.
Idle speed: 700 ± 50 rpm

c. Remove the cap, filter and separator from the DP




d. Maintain the engine speed at 2,500 rpm or more.
e. Plug the VTV hole with your finger.
f. Release the throttle valve.
g. Check the DP is set.
DP setting speed: 1,800 - 2,200 rpm




h. If the setting speed is not as specified, adjust it with the DP adjusting screw.
i. Remove your finger from the hole and check that the engine returns to the idle speed in approx. 1 second.
j. Reinstall the DP separator, filter and cap.

HINT: Install the filter with the coarser surface facing the atmospheric side (outward).

4. INSPECT THROTTLE OPENER
a. Allow the engine to warm up to normal operating temperature.
b. Check the idle speed.
Idle speed: 700 ± 50 rpm




c. Disconnect the vacuum hose from the throttle opener, and plug the hose end.
d. Check the throttle opener setting speed.
Throttle opener setting speed: 900 - 1,950 rpm

If the throttle opener setting is not as specified, replace the throttle body.

e. Stop the engine.
f. Reconnect the vacuum hose to the throttle opener.
g. Start the engine and check that the idle speed returns to the correct speed.